Disk wheel



Aug; 3 1926. I 1,594,717

- G. H. FORSYTH DISK WHEEL Original Fil ed March :3. 1922 fi i w Patented Aug. 3, 1926.

Parser QF FICE.

GEORGE H. FORSY'IH, OF CHICAGO, ILLINOIS, ASSIGNOB TO MOTOR WHEEL CORPORA- IEION, OF LANSING, MICHIGAN, A CORPORATION OF MICHIGAN.

DISK WHEEL.

Original application filed. March 3, 1922, Serial No; 540,678. Divided and this application filed Januaryv Serial No. 2,792

My invention has to do with disk wheels and has for its principal object the provision of a wheel of the disk type wherein a composite disk of metallic and non-metallic 5 layers is rendered susceptible of employment instead of the usual sheet steel disk, without impairment of strength under dead load, resistance to deforming stresses in road use, and life and elliciency under weather conditions and attack of the elements; all accompanied by a reduced cost'of production,the elimination of noises due to resonance and an enhanced adaptability both to heavy commercial and light pleasure cars. I accomplish this object by the employment of alaminated disk of steel and a material having a substantially lower coei'ficient of elasticity than sheet steel, with or without the reinforcing inlay of steel interlocked with the other material and I may shape the disk and so assemble the same with the hub and rim as to place and maintain the disk under radially reacting stress, whereby to strengthen and reinforce the same against deformation by strains of use acting in the plane of the wheel or laterally thereof.

In order that the invention and its use may be readily understood by those skilled in the art I have set forth two embodiments of the same in the accompanylng drawing and in the following detailed description predicated thereon. It will be understood that the principles of the invention are.

adaptable to other varied embodiments with-.

5 out sacrifice of their material advantages,

Figs. 1 and 2 represent in radial section,

fragmentary portions of disk wheels embodying the invention.

In Fig. 1 the fibrous sheets 11 forming the disk are assembled with a metallic reinforcing inlay 12, such as sheet steel, and preferably secured thereto in any suitable manner,

although they may be independent of each other and shaped in the process of forming so as to lie in intimate contact throughout their extent.

In Fig. 2 the disk is shown as comprising multiple sheets .13 of hardened originally plastic organic fiber such as wood pulp having imbedded therein an inlay sheet 14 of steel which is advantageously foraminous, being provided at spaced intervals with holes 15 by means of which the steel inlay and the fibrous sheets'13 are interlocked. It will be understood that there may be any desired number of successive layers of metal ic and non-metallic sheets constituting the disk.

It will be understood that the sheet mate'- rials employed as component parts of the disk, other than the inlays 12 of Fig.1 and 14: of Fig. 2, have a decidedly lower costlicient of elasticity than has steel such as has been heretofore employed in the making of disk wheels, and such materials also possess in a less degree the property of resistance to deformation. I have found that while such materials are ordinarily not adapted alone to withstand the strains to which automobile wheels are subjected, yet when assembled with and reinforced by the steel inlay the elasticity and resistance of such materials are so highly augmented that the wheel as a whole has a strength far more than sufiicient to meet all requirements. I

In assembling the disk with the hub and rim portions the intermediate portion of the disk may be advantageously maintained under radial stress by force applied at the hub 16, at the rim 19, or both, as set forth in detail in the parent application.

In the figures of the drawing, the means of assembling the rim 19 with the peripheral portion of the disk acts through force laterally applied andv reacting inwardly in a direction toward the hub to stress not only the intermediate portion of the disk but also the peripheral portion 20 thereof. Whether this deforming force is applied at the hub by the bolts 17, or at the periphery, by the bolts 23 and 26, or both, the disk throughout its area is subjected to and maintained under radial stress and its force of resistance to and recovery from strains is greatly enhanced.

As a means of assembling the disk with the rim andstressing the same by inward radial reaction various expedients may be employed as for instance:

In: Fig. 1" the laterally; deflected peripheral portion of the disk" underlies the telly member 21 by means of which it is held under. permanent stress, the rim 19 being assembled therewith. by means, of, the clip- 22, and: the

bolts 23. V

Fig. 2 represents a construction in which the peripheral-:portion 20 oii the-diskislater ally disposed: at; a. slight'incline to-thehori-v zontal and therstressing of the disk. is accomplished; by: the wedging: acti'on'of the rim surface 24 under the force appliedato the rim flange 25- by the bolts 26:

While in each: of.- thefigures I have shownan assembly whichplacesand maintainsthe disk. under stress, it will; be understood that for some purposes this supplemental strengthening of the diskwo'uld not be requiredand the: invention is not to be con sidered: as necessarily an associationof, then. two; ideas of disk construct-ion and wheel.

assembly, asthe one: has elements. of" de. cidedi value independent/lot the other.

I=claim;:'

11 In a. wheel, the combination with the" hub-portion and the tire-carryingperipheral portion, of an. intermediate.- disk. portion,

comprisingmetallie and; non-metallic sheets, the latter forming the-exterior surface.

2; In LWl1e8l, the: combination. with the hub portion and the tire-carryingperipheral 1 portion, of an: intermediate; disk portionv comprising; metallic and non-metallic sheets in contact substantially throughout thedisk' area, the-latter forming the exterior surface:

3'; Inv a wheel, the; combination with the.- hub portionand the tire-carrying peripheral.

portion, of an. intermediate disk portion comprising metallic and. nonemetall-ic sheets in contact substantially throughout the disk:

the said disk assembled in the wheel under radially reacting stress.

6. In a wheel, the combination with the hub portion and the tire-carrying peripheral portion, of an intermediate disk portion comprising a plurality of sheets having different coeliicients of elasticity, the sheet having a lower coeflicient forming the extethe exterior surface.

8; In a wheel, the combination with the hub portion: and: the tire-carrying; peripheral portion, of an intermediate disk. portion comprising aplurality of sheets having diff-- ierent. coefiicients of elasticity mechanically interlocked and in contacts substantiallythroughout the disk area,

9. In a wheel, thecombination with; thehub' portion and the tire-carrying, periph-.-

eral. portion,.ofi an intermediate. disk portion. comprising a plurality off sheets of'organici material and a sheet of steel? secured there to, the sheets in contact substantiallythroughout'the disk area.- V

10. In a wheel,.the combinationwitlithev hubportion and the tire-carryingperipheral; portion, v of an. intermediate disk: portion:

comprising a. plurality of sheets ofnonrmetallic material. and air inlay sheet. of steel inter-posed. therebetweeng. the sheets; in, ens gaging. contact substantially thronghoutthea disk area.

11. In a Wheel, the combination with. the. hub portioniand the tire-carrying. peripheral;- portion of an intermediate disk portionv comprisingta plurality of sheets-of= non-meetallic material and.- an inlay sheet of steel in terposed therebetween; the sheets inengaging; Contact substantially. throughout! the.- disk area, the said, compositedisk yieldablei radially" and assembled Wlth the hub andrim,

portions of the wheel under radiallyreacting.

stress.

12 Ina wheel, the combination with the: hub: portion and the tire-carrying. peripheral. portion, .of an intermediate-disk portion com.- prising; a plurality of sheets of hardened originally plastic material and-.a'foraminous inlay sheet of steel interlocked therewith.

13. In a wheel, the combination with the hub portion and the tire-carryingiperipheral portion, of an intermediate disk; portion comprisinga plurality of sheets ofhardenedoriginally plastic material.- and a TEOI'ZLIDlIlOllS? inlay sheet of steel interlocked therewith,

the said. disk. assembled in. the wheel under radially reactingstress. I I v 14. In a wheel, the combination with the 5 stress.

15. In a wheel, the combination with the hub portion and the tire-carrying peripheral portion, of an intermediate disk portion comprising a plurality of mechanically interlocked sheets having different coeflioients of elasticity.

16. In a wheel, the combination with the hub portion and the tire-carrying portion, of a composite body portion including a foraminous metal disk.

In testimony whereof I have hereunto signed my name.

GEORGE H. FORSYTH. 

